Home / 877,298.40-1,317,502.80-678,103.20

Finding the Fourth Proportional to 877,298.40, 1,317,502.80 and 678,103.20

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Solution

The fourth proportional to 877,298.40, 1,317,502.80 and 678,103.20 is: 1,018,356.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,298.40 : 1,317,502.80 = 678,103.20 : x
  2. Step 2: Convert to fraction form
    877,298.40/1,317,502.80 = 678,103.20/x
  3. Step 3: Cross multiply
    877,298.40x = 1,317,502.80 × 678,103.20
  4. Step 4: Simplify right side
    877,298.40x = 893,402,864,688.96
  5. Step 5: Solve for x
    x = 893,402,864,688.96/877,298.40
  6. Step 6: Final answer
    x = 1,018,356.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.